Catkin liked nano-Co3O4 catalyst built-in organic microreactor by PEMOCVD method for trace CO oxidation at room temperature

被引:11
作者
Chen, G. L. [1 ,2 ,3 ]
Guyon, C. [3 ]
Zhang, Z. X. [1 ,2 ]
Da Silva, B. [3 ]
Da Costa, P. [4 ]
Ognier, S. [3 ]
Bonn, D. [3 ,5 ]
Tatoulian, M. [3 ]
机构
[1] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Hangzhou 310018, Peoples R China
[2] Zhejiang Sci Tech Univ, Engn Res Ctr Ecodyeing & Finishing Text, Minist Educ, Hangzhou 310018, Peoples R China
[3] Univ Paris 06, Ecole Natl Super Chim Paris, Chim ParisTech, Lab Genie Proc Plasmas & Traitements Surfaces, F-75005 Paris, France
[4] Univ Paris 06, CNRS, UMR 7190, Inst Jean Le Rond dAlembert, F-78210 St Cyr Lecole, France
[5] UvA, IOP, NL-1018 XH Amsterdam, Netherlands
基金
中国国家自然科学基金; 浙江省自然科学基金;
关键词
Nano-sized catalyst; Organic microreactor; PEMOCVD; Heterogeneous catalytic oxidation; OXIDE THIN-FILMS; COBALT OXIDE; CO3O4; COMBUSTION; CHEMISTRY; GLASS;
D O I
10.1007/s10404-013-1220-y
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this paper, tricobalt tetraoxide (Co3O4) catalyst was coated on the polydimethylsiloxane microchannel by the plasma-enhanced metal-organic chemical vapor deposition technology. The obtained Co3O4 film was characterized by SEM, XRD, XPS, and TEM, and the results show that the as-deposited Co3O4 film was initially composed of many cauliflowers-shaped microclusters. Also, the microcauliflower was transformed from an amorphous phase to a crystal phase when the Co3O4 film was treated by Ar and O-2 plasma for more than 20 min, and the crystal lattice line occurred on the surface of nano-sized-Co3O4 particles. Meanwhile, the interface of Co3O4 particles with diameter between 3 and 12 nm became obvious and some nano-catkin structures were also formed on the Co3O4 film. The ratio of Co3+/Co2+ in the spinel-type Co3O4 was nearly 2, and the nano-particles predominantly expose their {311}, {111}, and {220} planes. These morphologies and structure characteristics were found to be ideal for increasing the catalytic activity efficiency of Co3O4 for CO oxidation, and the catalytic stability of Co3O4 coated on the organic microreactor lasted nearly 85 h for trace CO oxidation at room temperature.
引用
收藏
页码:141 / 148
页数:8
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